Leather-toughening composition and process of making same.



UNITED STATES IATENT oFFicE.

CHARLES W. GROSS, OF NAPA, CALIFORNIA, ASSIGNGR OF ONE-HALF TO EDWARDW.. ROBINSON, F NARA, CALIFORNIA.

nna'rnnn-ronennmne coMPosrrIoN AND rnocnss or mmnesnmn.

No Drawing.

' To all whom it may concern Be it known that I, CHARLES W. G Ross, acitizen of the United States, resldmg at Napa,'in the county-of Napa andState of California, have invented new and useful Improvements inLeather-Toughening 5Composition and Processes of Making Same, of whichthe following is a specification.

' The present-invention relates to an improved composition fortoughening leather,

and to a process of making the same.

In making my improved composition, I

melt two-thirds of a pint, dry measure, of rosin, and into the rosinwhen melted, I :put

one-eighth of a pint, dry measure, of red shellac. "I next heat oneliquid pint of linseed oil and mix it with one liquid pint of meltedmutton tallow. I next pour the hot mixture of linseed oil and, muttontallow into the melted rosin and shellac, then stir'the mixture, andthen allow it to cool off until it becomes lukewarm. I 'then pour in onepint of gasolene. It is foimd that if gredients of my improvedcomposition, an. inferior, although good, composition can be 'made byomitting either the linseed oil or 4 the mutton tallow using acorrespondingly Specification of Letters Patent.

- larger quantity "of the other of these ingredients, and linseed oiland mutton tallow may be regarded as toacertain extent equivalents. Inlike manner an inferior composition canbe made by omitting the shellacand increasing the quantity of .ro'sin. The

. gasolene is added for the purpose ofrenderlng the composition morefiuidand therefore moreeasily ableto penetrate the pores of the leather,and the gasolene, of course, evaporates and leaves the remainingingredients embedded in said pores.-

Any other light volatile liquid, which will perform. the same ofiice asgasolene in this composition, is to be regarded as its equivalent. I a

I claim 1. A composition comprising rosin, red shellac, linseed oil,mutton tallow d gaso- Ende substantially in the prop'ort' I specie 2.The process of making a leather tough ening composition which consistsin melting rosin and mixing therewith dry shellac, adding to the mixturehot linseed oil and mutton tallow, agitating the mixture, and add- ,ing.gasolene thereto when lukewarm In testimony whereof I have hereunto setmy hand in :the presence of two subscribing Y witnesses.

CHARLES w. GROSS. Witnesses;

F. M. WRIGHT, D. B. RICHARDS,

I Patented Aug. 10,1915. Application filed se tembera eia. Serial No.788,651.

